Can I ask why this is getting downvoted?
Most of the other comments are basically saying this ("the pay is too low for too long for not enough reward").
Anecdotally: I'm teaching a course in "How To Be Successful In College" (not it's real name) at the US community college where I teach Computer Science. I've got more than 1 student who are going to get a credential for nursing because there's just no way they can spend 8-10 years in school to become a doctor.
Would they be good doctors? The question is moot because it's never gonna happen.
I don't know that people even care, at that. The way most are forced to interact with the healthcare system, a doctor is just a nurse in a white coat who's also a bit of an asshole (aloof and/or smarmy). Especially when they misdiagnose or miss a diagnoses.